11g RAC - single client access name (scan) 的设置问题
Oracle 11.2.0.2.0 , Linux AS 5.3 64bit
[root@wsjrac01 etc]# cat hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost
::1 localhost6.localdomain6 localhost6
10.109.196.151 wsjrac01
10.1.1.151 wsjpri01
10.109.196.152 wsjvip01
10.109.196.153 wsjrac02
10.1.1.153 wsjpri02
10.109.196.154 wsjvip02
10.109.196.155 wsjrac03
10.1.1.155 wsjpri03
10.109.196.156 wsjvip03
#single client access name(scan)
10.109.196.157 wsjscan1
10.109.196.158 wsjscan2
oracle 11g 的scan最多可以配置3个地址并对应域名。 SCAN是配置到DNS服务器上的，提供给RAC的仅仅是对应的DNS NAME , 这三个IP在DNS服务器上各对应同一个DNS NAME， 就是SCAN .
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